I have made a detailed calculation of this process. An explanation of
the calculation can be found in the file
BarrosoFest.pdf
and also in
the original article
A. Barroso, J. Pulido and J. C. Romão, Higgs Production at
colliders, Nucl. Phys. B267 (1986), 509.
Other relevant information can be obtained in the following files:
- The model file for QGRAF can be obtained
gws-tHooftFeynmanGauge
- The QGRAF output file for ZHG.
- You can also download a mathematica input file
eEHG.m
for FeynCalc
- It is also available a fortran
program eEHG.F
which uses the
LoopTools package to evaluate the Passarino Veltman
functions.
- Checks of the 3-point functions were made with the programs
ghgtest.F
and
zhgtest.F.
- The needed extra files can be found in the section
Numerical Calculations.
- The final result for the cross section is summarized in the
following plot:
Jorge Romao
2023-09-01